Successful Weight Loss While Taking an Antidepressant

Hi I am currently taking Remeron for my anxiety and depression, as well as sleep issues. One of the side effects is weight gain. It sucks because it helps me so much in so many ways, but since I started taking it back in August, Ive gained atleast 10lbs, maybe more(Im scared to weigh myself, but know Ive gained because none of my clothes fit). I want to continue to take it since it helps tremendously with my horrible anxiety episodes and my insomnia, but I cannot afford to buy new clothes, and its making my self esteem go way down. I am normally tall and pretty slender, but Ive had 3 kids, the youngest is almost 2yrs old & Ive NEVER weighed this much after Ive had a baby. I still look like Im about 5-6months pregnant and have had some very ignorant people ask if Im expecting again(NO, had my tubes tided!) so all the weight sits right in the middle. I was trying at 1st to loose the weight I put on, watching what I was eating, walking/running at the local track and exercising at my home... but I gave up at about 6 weeks of seeing no results. Soooooo, my question is if anyone has ever taken Remeron or any other med that has caused weight gain, and you were able to continue taking the meds and successfully loose weight. I know I shouldnt of given up, but I have 3 small and busy boys, one who has mild Autism, so I never had any free time to work on me, but maybe if I heard some success stories, Id be a bit more hopeful... Thanks in advance :)